Even today, the GS1 is a remarkable instrument, weighing 90kg (a hair under 200lbs) and designed like a miniature grand piano. It’s clear that Yamaha intended it for studio use.

But don’t let the 19th century looks deceive you. Its beautifully weighted 88-note keyboard is both velocity and poly-pressure sensitive, and — with the exception of on-board editing — it is everything you would expect from a top-of-the-range synth.